Re: Time to add 2002::/16 to bogon filters?

[LHC <large.hadron.collider () gmx com>]

2002::/16 is still valid - not a bogon as long as there is an IPv4 Internet. Add the IPv4 bogons, though 
(2002:7f00:0000::/48 through 2002:7f.ff:ff.ff::/48, & others)

On July 9, 2018 3:06:00 PM PDT, "Fabien VINCENT (NaNOG)" <list-nanog () beufa net> wrote:
> Le 2018-07-09 18:10, valdis.kletnieks () vt edu a écrit :
>
> > On Mon, 09 Jul 2018 15:21:31 +0200, "Fabien VINCENT (NaNOG)" said:
> >
> > > I think it's still used a bit ? I see today announcements over the
> > > following OriginAS over more than 2000 peers.
> > >
> > > as1103    SURFnet bv
> > > as1835    Forskningsnettet - Danish network for Research and
> Education
> > > as2847    Kauno technologijos universitetas
> > > as6939    HURRICANE
> > > as16150   Availo Networks AB
> > > as25192   CZ.NIC, z.s.p.o.
> > > as28908   A3 Sverige AB
> >
> > Announced and used are two different things.. :)
> >
> > sudo tcpdump -ni any 'net 2002::/16' tcpdump: verbose output 
> > suppressed, use -v or -vv for full protocol  decode
> > listening on any, link-type LINUX_SLL (Linux cooked), capture size 
> > 262144 bytes
> > 15:10:59.588097 IP6 2002:6bab:c6c6:0:e561:b9f7:b221:a73.51413 >  
> > 2001:470:1f12:dead::beef.51413: UDP, length 94
> > 15:10:59.588233 IP6 2001:470:1f12:dead::beef.51413 >  
> > 2002:6bab:c6c6:0:e561:b9f7:b221:a73.51413: UDP, length 365
>
> I'm pretty sure that 2002: address is (a) *your* end of the tunnel  and
>
> (b)
> only visible inside your network and *inside* the HE tunnel to the
> other 
> end.
> In other words, it shouldn't be seen out on the public net if it's 
> transiting
> an HE tunnel. I bet if you changed that '-i any' to '-i wlan' (for 
> whatever
> your router calls the outbound-facing interface) you won't see traffic 
> on 2002:
>
>
> You're right, it does need to be public to work ;) So my question is
> why 
> it is still and it was announced on DFZ ?
>
> Regards,
>
> -- 
> FABIEN VINCENT
> _@beufanet_

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